Collab for sheet metal vessels



(No Model.)

J. P. ROSS.

, GOLLAR FOR SHEET METAL VBSSELS. No. 308,281. Patented Nov. 18, 1884.

Fig.1.

W'z'bzeasea Inventor. .5

cc fidzlmw 1 61W tially as hereinafter more particularly ex- I not pressed home, in order that the form of Uwirnn Stains Aren't rates.

JOHN F. ROSS, or TORONTO, ONTARIO, CANADA.

COLLAR FOR SHEET-METAL VESSELS.

:EBF'ECIFICATION forming part of Letters Patent No. 308,281, dated November 18, 1884.

Application filed August I, 1884. (K0 model.)

T0 at whom it may concern.-

Be it known that I, JOHN FORsTER Ross, of the city of Toronto, in the county of York, in the Province of Ontario, manufacturing tinsmith, have invented a new and useful Sheet- Metal Plug for Metal Vessels or Packages; and I do hereby declare that the following is a full, clear, and'exact description of the same.

Patented in Canada August 16, 1884, No. 20,002.

flange; but a portion of the bottom is cutaway so as to leave an opening into the package, but leaving sufficient of it around the edge of the wall A to form a flange, B, which serves ,as a strengthening flange for the wall A.

It will thus be'seen that in both the lid and the ring the walls A, which are called upon to withstand the strain caused by compressing The ob'ect of the invention is to desm tm e into the other, are so firml braced b the J a: N I y plug, lid, or stopper for a metal case, which may be pressed or forced into position so as to hermetically seal the package or vessel without the necessity for introducing solder or other sealing substance; and it consists, essentially, of a sheet'metal disk stamped so as to form a dish having sides at about right angles to its bottom, and an outwardly-projecting flange around the top edge of the side so formed, in combination with a ring stamped into a form substantially corresponding inversely with that of thelid, and secured to the mouth of the package or vessel, the relative diameters of the sides of the lid and ring being such that under great pressure they maybe compressed into or onto each other so as to form a tight joint between the two, substanplained.

In the drawings the thickness of the metal forming the parts is exaggerated in order to better illustrate the invention.

Figure 1 is asectional elevation ofa package having the lid arranged to fit Over the ring circling the mouth of the package. Fig. 2 is a similar view exhibiting the device when the lid is pressed into the ring. Fig. 3 is a perspective view, partially in section, of the lid; Fig. 4 is a perspective view of the ring, partiallyin section, employed in connection with the lid.

form descrilTedt'hat they cannot be expanded or contracted to any appreciable extent, eonsequently when the lid-is pressed into or onto the ring, thejoint formed between the two is absolutely tight, and no shaking Or jarring would be sutlicient to separate the two.

Another great advantage in the form of the lid here described is that a package provided with a ring formed in accordance with my invention, and having a lid correspondingly shaped, as described, may be hermetically and permanently sealed by simply pressing the lid into Or onto the ring, it merely being necessary to provide means for pressing the lid into position, neither solder or its equivalent, nor skilled labor, being required for the purpose of effecting the seal. Moreover, as my cover cannot be united to the can without great pressure, it will be easily seen before the two are put into the press to unite them whether or a tight joint, and thus imperfect joints will be prevented. I

It will be observed that the flanges to the walls on the lid and ring are arranged to fit closely to each other, and that the walls of the two sections are to be of such relative sizes that they cannot be fitted together without great pressure. This I consider of great importance, as, unless they were of this relative size, it would be impossible to produce a suffi- In Figs. 1 and 2 I purposely show the lid both the lid and the ring may be better understood.

As will be seen by Fig. 3, the lid consists of a sheet-metal disk stamped so as to form a dish having a wall, A, at about right angles to the bottom 13, and an outwardly-proj ecting flange, 0, around the top edge of the wall A. The ring shown in Fig. 4: corresponds in form, it will be seen, inversely with the form of the lid ciently tight joint.

I am aware of the Patent No. 123,837, in which a ring having an inclined wall is provided with a lid having a similarly-inclined wall; but make no claim to the invention shown therein, as with a ring and lid of that form a slight pressure would readily separate the lid from the ring, but with my arrangement this cannot be done.

I am also aware of Patent No. 83,849, and make no claim to the construction shown thereshown iuFig. 3, A being its wall, and 0 its in as forming part of my invention, as I deem not they are of the proper relative size to form my invention as essentially difierent therefrom and an improvement thereon, inasmuch as in the device above referred to a separate locking device is necessary to hold the cover securely in place, whereas mine, when once pressed into place, needs no locking device to m keep it there.

I am also aware of the English Patent No. 1,301 of 1882, and make no claim to the construction shown therein.

Vhat I claim as my invention is A closure for a package consisting of two sections, one forming a ring and the other alid, each section having a wall formed substantially perpendicular, and a flange at right an- JOHN F. ROSS.

Witnesses:

G150; MARLIN RAE,

Of the city of Toronto, Notary Public. CHARLES C. BALDWIN. 

